Eye mask



FIG. 1 is a front elevation view of an eye mask, showing our new design, the rear elevation view being identical;

FIG. 2 is a left side elevation view thereof; the right side elevation view being identical;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines depict portions of the article that form no part of the claim. 

CLAIM The ornamental design for an eye mask, as shown and described. 